Sash-lock.



L. R. EDDY.

SASH LOOK. APPLICATION FILED JAN. 20, 1909.

917,567. latented Apr. 6, 1909.

UNTTED SASH-LGCK.

Application filed January 20, 1909.

Specification of Letters Patent.

Patented April 6, 1909.

Serial No. 473,333.

To all whom it may concern:

Be it known. that l, LAwnnNon it. EDDY, a citizen of the United States,and a resident of Elizabeth, in the county of Union and State of NewJersey, have invented certain new and useful Improvements in Sash-Locks,of which the following is a specification.

The invention relates to improvements in sash locks of that descriptionwhich are mounted on the meeting-rails of the sashes whereby the windowcan be secured to prevent opening of the same from the outside.

More particularly it relates to improvements in the sash-lock disclosedin Patent 865,090, granted to me September 3, 1907. In that device thelocking-bolt is operated by means of a gear-mechanism, which is of asomewhat costly and complicated structure and is liable to get out oforder after considerable use. In the invention in the present instanceit is proposed to do away with the gear-mechanism and to replace thesame by a toggle-movement that is efficient and durable, and otherwisesimplify the construction as to reduce the cost of manufacture.

The invention consists in the novel construction, combination andarrangement of parts, such as will be hereinafter described, pointed outin the appended claims and illustrated in the accompanying drawings.

In the drawings, in which similar reference characters designate corresending parts, Figure 1 is a plan view of a sash-loch embodying theinvention, showing the same applied to the meeting-rails of awindow. 2is a horizontal sectional view. Fig. 3 is a crosssectional view on theline 33 of Fig. 2. Fig. 4 is a rear elevation of the main casing. Fig. 5is a front elevation of the main part of the lock. Fig. 6 is an enlargeddetail perspective view of the operating key, arm and shaft.

The meeting-rails 1 and 2, respectively, of the upper and lower sashesof a window are of the usual construction. On the rail 2 is the maincasing comprising the main shell 3 and the base 4 attached to the railby the screws 5. The main shell and base are secured. together by thescrew 6. In the face 7 of the main casing is the opening 8 having anenlargement 9 at one end. Through this opening projects the bolt 10 whenthe latter is in looking position. The outer end of the bolt is enlargedto form the head 11. The body of the bolt is provided with an elongatedbearing 12 registering with the screw 6, which forms a pivot for thebolt. This bearing is of sufficient length to permit the bolt to bemoved outwardly and inwardly of the casing during the locking andunlocking operations.

Means for advancing and retracting the bolt 10 are provided. On the rearor inner end of the bolt is the pin 13 with which engages the arm 14fast on'the vertical shaft 15 journaled at its ends in the casing. Theinner end of the arm is recessed to form a seat for the inner end of thekey 16 and is provided with a lug 17 for holding the key in place. Theinner end of the key is provided with a bearing 18 to engage the shaftand a shoulder 19 to engage the lug 17 on the arm 14. The outer end ofthe key 16 projects through the opening 20 in the rear face of the maincasing. t one end of the opening 20 is the shoulder 21 to engage thefreeend of the key. On the shaft 15 is secured the inner end of thecoiled spring 22 by the pin 23. The outer end of the spring is securedto the post 2 1 in the main casing. The spring is under tension andtends to turn the shaft 15 to move the arm 14 to project the bolt 10outwardly. The key 16 serves to turn the shaft 15 against the action ofthe spring to retract the bolt. interposed between the spring and thekey is the washer 25 to hold the two separated.

In the main casing immediately back of the face '7 is the latch 26. Theinner end of the latch is inserted between the post 24 and the face ofthe casing. The outer end of the latch extends through the slot 27 inthe side of the casing and has the forwardly projecting lip 28. Thelatch is free to move vertically and when the bolt is retracted it fallsacross the opening 8, 9 and serves to hold the bolt within the casingagainst the action of the spring. The latch is held in place againstlongitudinal movement by the shoulders 29.

On the top of the meeting-rail 1 of the upper sash is the supplementarycasing 30 having a face 31 to fit the face 7 of the main casing. In theface 81 is the opening 32 with the enlargement 33 to correspond with theopening 8 and enlargement 9 in the face '7 of the main casing. On an endof the supplementary casing is the lug 34 to engage the lip 28 of thelatch 26.

The operation of the device is as follows: When the locking members areengaged they I are in the relative positions shown in Fig. 2. 1 The bolt10 projects from the main casing into the supplementary casing with itsshank extending through the reduced openings 8 and 32 and its headengaging the adjacent edges of the face 31 of the supplementary casiThis movement of the key, through its engagement with the shaft 15 andthe lug 17, turns the shaft against the action of the spring 22. Thisturning of the shaft swings the outer end of the arm 14 toward the face7 of the main casing. As the outer end of the arm is pivoted on the pin13 on the inner end of the bolt, thereby forming a toggle-connectionbetween the shaft and bolt, the latter is moved-through the reducedopenings 32 and 8 and its head through the enlargements 33 and 9 to theposition indicated by dotted lines in Fig. 2, which unlocks the device.The elongated bearing 12 in the body of the bolt, pivoting on the screw6, permits the bolt to move in the manner described. I'Vhile the key isheld by the hand, or is raise d to engage the shoulder 21 in the rearface of the main casing to permit the use of both hands, against theaction of the spring, the lower sash is raised slightly to disengage thelug 84 of the supplementary casing from the lip 28 on the latch 26. Thelatch thereby being freed, drops across the opening 8, 9 and holds thebolt within the main casing. The key can be released from the hand ordisengaged from the shoulder 21 and the parts will be in position foranother locking operation. When the two meeting-rails are moved togetherin closing the window the lug 34 on the supplementary casing engages thelip 28 and thereby raises the latch 26. This releases the bolt just asthe two faces of the casings come together. The spring, through theintervening mechanism, projects the bolt through the registeringopenings in the contacting faces of the casings to the locking position.

As an additional safe-guard it may be desirable to have a removable key.This can be done by slightly reducing the size of the engaging parts ofthe key 16 so that it can be raised from its seat in the arm 14 over thelug 17 and the bearing 18 freed from the shaft 15 so that the key can bewithdrawn from the casing.

Having thus described my invention, what I claim and desire to secure byLetters Patent is:

.1. In a sash-lock, a bolt provided with an elongated bearing, a pivotfor said bearing, a

rotatable shaft, a toggle-connection between said shaft and said bolt, aspring for rotating said shaft to operate said toggle-connection toproject said bolt to locking position, and means for turning said shaftto operate said toggleconnection to retract said bolt to unlockingposition. 7

2. In a sash-lock, a bolt provided with an elongated bearing, a pivotfor said bearing, a rotatable shaft, a toggle-connection between saidshaft and said belt, a spring for rotating said shaft to operate saidtoggleconnection to project said bolt to locking position, means forturning said shaft to operate said toggle-connection to retract saidbolt to unlocking position, and a latch operating to hold said bolt inits retracted position against the action of said spring.

3. In a sash-lock, a bolt provided with an elongated bearing, a pivotfor said bearing, a rotatable shaft, an arm fast on said shaft ivoted tosaid bolt, a spring for rotating said shaft to turn said arm to projectsaid bolt forward to a locking position, and a key for turning saidshaft against the action of said spring to retract said bolt.

4.. In a sash-lock, a bolt provided with an elongated bearing, a pivotfor said bearing, a rotatable shaft, an arm fast on said shaft pivotedto said bolt, a spring for rotating said shaft to turn said arm toproject said bolt forward to a locking position, a key for turning saidshaft against the action of said spring to retract said bolt, and alatch for holding said bolt in a retracted position against the actionof said'spring.

5. In a sash-lock, the meeting-rails of a window, a main casing on oneof said rails having an opening in its face, a pivot in said casing, abolt having an elongated bearing on said pivot, a pin on the inner endof said bolt, a rotatable shaft, an arm fast on said shaft engaging saidpin, a spring for rotating said shaft to move said arm to project saidbolt through the opening in the face of said casing, a key for rotatingsaid shaft against the action of said spring to retract said bolt, alatch pivoted in said casing for holding said bolt in its retractedposition, a lip on said latch outside of said casing, a supplementarycasing on the other of said meeting-railshaw ing an opening in its faceto correspond with the opening in theface of said main casing to receivesaid bolt, and a shoulder on said supplementary casing to engage saidlip to raise said latch to free the bolt when the meeting-rails aremoved together.

In testimony whereof I hereunto affix my signature in the presence oftwo witnesses.

LAJVRENCE R. EDDY.

Witnesses FRED BLACKWELL, GUsTAv A. ITEM.

